Method and device for mechanically attaching pins to fly catcher tapes



F. KAISER 1,981,732

METHOD AND DEVICE FOR MECHANIGALLY ATT-ACHING PINS TO FLY CATCHER TAPES Nov. 2 0, 1934.

3 Sheets-Sheet' l Filed Sept. 2l, 1952 F. KAISER 1,981,732

METHOD AND DEVICE `FOR MECHANICALLY ATTACHING PINS TO FLY CATCHER TAPES Nov. 20, 1934.

5 Sheets-Sheet 2 Filed Sept. 2l, 1932 F. KAISER METHOD AND DEVICE FOR MECHANICALLY ATTACHING PINS TO FLY GATCHER TAPES 3l sheets-sneer s Filed Sept. 2l, 1932 Patented Nov. 20, 17934- ATTACHING PINS TAPES Friedriclrvv Kaiser,

Waiblingeng.. Wurtemberg,

Germany Applicatic'nrSeptemberv 21, '1932;' Serial No'. 6345255 In Germany'Decelnberlw19311` 4 11 Claims.

This invention relates to a method and .device for mechanically attaching a suspension pin to the looped draw tape of fly catchers of the adhesive band, type, particularly a drawing. pin. Whose head is fitted Withla projecting finger adapted to form an eye -fo'r holding. the looped drawtape. Drawingpins were hithertoA secured to these tapes by hand or primitive means either Vby running thetapethrough an opening in the head l0 of the `pin or by clamping it in position by means of a projection on the. pin head.. Handwerk, however. is expensive and requires much time, and if the. drawingpins are attachedV during one of the first operations they` will' be very -15 troublesomeduring subsequent operations.. These drawbacks. areeliminated by themethod and device accordingto the. invention.

The newI method.. consists in mechanically picking up` thevdiawing, pins kept? in a container one by one or insmall. numbers. placing rthem on a moving support; the. motion offwhich arranges them ontheir. backs, i.' e., .the topsides of their flat heads., sorting.- them conveying them individualIy on .another moving support, and .positively orienting them on this support so as toplace theiingersserving" for forming the eyesfor holding the .loopedtape in a' certain direction and. facilitate Athereby' the attachment thereto of thetape members of "the finished fly catchers, whereupon. the fingers arebent'down and thus caused to form an eye. All these steps are successively and automatically carried out in the, deviceaccording. to the` invention, which constitutes a self-contained unit andr comprises a feed plunger for lifting the drawing.' pins supplied haphazardIy to a container individually" or in small numbers out. of the latter and onto'a shaking trough, one or several sortingwheels insuringthecontinuous supply of pins'toa' rotary s 40 table, andthe rotary ytable justmentioned which is fitted withholdingmeans. Onthistable the drawing pins are ori'ented'by` a special'device preparatory to attaching Ythe tape member :to the finger projecting fromy the pin heads and'bend.-

` ing`,the fingerinto a. closedeyeby'means. of'a clamping. plunger.

By way of example, the device' according *tothe invention is illustrated in the." accompanying drawings, in whichEigure 1 isa side view'thereof,

yshowing V.particularly the .containerforthe .drawi- Ving pins, the sorting-device, andthe rotarytable for .the orientedpins; 2 is a side view, partly in. section, cf the means. for feeding drawing pins. to. the rotary. table.. of .the .holding means andthedevice frb'ending andclsing. the fingers (criss-10').

oflthepins', Fig. 3 visa top viewfofLthedvice' in. itslentirety; Fig. l1,1.a side View of Jthe;device for orientingjthe pins; "Figs, 5 and`f6 l are detailviews showing. the shape. of?y the drawing pin. and how itisV attached to the .fly-catcher; Fig. Filis! an .en. larged fragmentary detail of. therotating. table andthe .reciprocating slide for. moving the pins thereto.r y

Referring to the drawings, Lis' the. container for.. the. drawing pins. arranged.. therein without regardfor order. '2 is.a...plunger=having.a flat or slightly`v recessedtop. andlbeing capable of moving .up and down in .the container. 1. An arm 43..is engaged with theplun'ger 2 and being pivotally.V mounted 'at.43 Yis engaged Lb'y. acamliA 'on a shaft .45... During. therotation of shaftl45 the.. arn1.43. .togethenwith plunger are. actu-i ated.. The plunger .2. lifts..a.t. each upwardQstroke onef or. severaljpins lout .of thecontainer .1, A,which by.A means. of?Y the. stripper.. 3l oscillating trans.; versely l tof the plunger. `2f are. conveyed. through the. chutelA .into .the shaking trough 5 Ywhich. is obliquely disposed'. both. in.. longitudinal. and transverse. direction .and,..b`y, suitable.. means, is intermittently., shakenV in. longitudinal .direction Rotary. movementis. imparted l to .the stripper from thev sha.ft45 through gear. wheels 46 and an. upright'. shaft 47.. Owing to. shaking motion, the.. draw/'img pinsv passing. down the trough` 5. are` placedlon ftheir backs,I sol. that the fingers` a. toA which thetape members; are. to be fastened arepointing upwardly. Shortly. before reachinggtheflowest cornerof the. trough, the vpins/.pass through alateral opening over an. inclined plane? into the..sorting..device. A y

vaprovided. in thelower cross secondbpening. y wall of vthetrough 5. permitspins. that have` failed to pass out .throughthe .opening .6- to. drop .into a .collector 8. The, sorting .device comprises several -obliquely' arrangedsorting...wheels:.wich. slowly rotate by anywellxknown means. Thesortingwheel9has on its .circumference uniformly spaced notches for.. successively, and. singly receiving. the draw- `ingpins. coming. out of. .the.sha1 ;'ing trough 5 and r100 passing,.,towards. .the circumference of.v the. wheel on., .theinclined plane.. 7, ,the .pins being.Y further Aconveyedby theguide rail. 11 lwhich curvesaround the lowest 1 wheel'y .portion .and vprevents .thepins yfrom..dropping.out.' Pins. that 'faillto be .accommndatedibyI ther notches. I0 "drop, back' .again into the collector., 8;... Preferably, in addition to the sortingwhe'el'. 9,` there are mountedl'on. the inclined "plane '7v and. below thewheel '9 y'one or .sev-

eral .sortingwh'eels 12'.' 13T which; progressively,

rotate more slowly than the wheel 9. This will result in an accumulation of pins in front of theI second and third wheel, so that in the second or surely in the third wheel all the recesses will be provided with pins.

On leaving the last sorting .wheel 13, the pins slide over the inclined plane 7 into a groove 14 which catches them successively and which contains a reciprocating slide moved forward by a cam 16 and a lever 17 with the slide roll 18, and withdrawn again by a spring 19. The feeding of the pins is so timed that one is supplied to the groove 14 just before each stroke of the slide 15. The slide 15 is cham-fered in front and, during its advance, moves the pins arriving in the groove ahead of it one after another onto the rotary table 20 which passes it on the same level, is moved in a step by step manner and serves for facilitating the attachment of the tape member b to the pins as will be hereinafter described. The table 20 is provided at the edge of its surface with equidistant hollows 21 for the reception of the drawing pins which during the advance of the l slide l5 are successively arranged in steps. The

.. f position'as illustrated in Fig. 7.

In order-tov cause the pins to point with their fingers towards that portion of the circumference of the table 2G' where the draw or pull tape is to be attached to the finger of each pin, a bolt .1., 22 capable of rotating always in the same directric tappet 23 which sooner or later will contact with the pin fingers, turns the pins into the properA position required for attaching the pull tapes. y On Aa horizontal driving shaft 24 always rotating in the same direction a helical gear 25 is disposed which meshes with the wheel 26 bearing a toothed rim 27 the teeth of which are engaged by the two opposite teeth 28 of a driver firmly connected with the bolt 22 guided in the wheel 26 so as to be rotatable and liftable. The driver has an annular groove which is engaged by two bolts 29 on a forked lever 30 which can rotate about a horizontal shaft 31 and can be alternately moved up and down by a cam 32 on the shaft 24. During its descent, the teeth 28 of the driver will lrest on the teeth 27, so that the driver and the bolt 22 will be rotated to the extent of one complete revolution which will come to an end when a nose 33 secured to the driver strikes the lever 34. At this moment, the cam 32 starts the reascent of the forked lever 30 together with the driver 28 and the boltl 2x2. The lever 34 is rotatable about a vertical shaft and is controlled by a cam 35 on the shaft 24 so as to release the nose 33 at the proper time. The motion of the rotary table 20 is effected in known manner, as for instance, from a shaft 40a through an intermeshing drive gear 41 of suitable form.

On thesurface of the rotary table 20 are positively guided` or cushioned slides 37 which correspond in number to that of the hollows 21, reciprocate radially and are controlled by a cam `36,the saidslides, on moving out, partly covering and holding in position the Adrawing pins disposed `in the hollows 2l, and during this time the looped pull tape may, bev attached to the finger a from a circumferential point of the table indicated at y in Fig. 3 within holding range by an operator or automatically. To depress the finger a, a plunger 39 alternately moved up and down by means of the cam 38 and a spring 38a is provided at another suitable point of the circumference of the table 20, which during its descent acts with its pressure pin 40 on the finger a projecting obliquely in upward direction from the head of the drawing pin, and presses it down over the pull tape. The depression takes place preferably in two steps by means of two plungers 39 arranged one behind the other on the circumference of the table 20, the first plunger acting merely on the free ends of the finger a and depressing the fingers so as to bend them while the second plunger acts on the center of the finger a and presses it down so that it forms with the pin head an eye adapted to receive the pull tape without clamping it, whereby it might be subjected to damage.

I claim:-

1. A method of mechanically attaching a suspension drawing pin to the adhesive band of fly catchers by means of a looped pull tape, particularly for attaching `a drawing pin having a projecting finger on the pin side of its head, which consists in picking up the unarranged pins from a container, sorting the pins, placing the pins individually with their pin portions and 1ingers pointing upwardly on a suitable support, orienting the pins, holding the oriented pins in position while attaching the looped pull tape to the finger and bending the finger upon the underside of the pin head to form an eye.

2. A machine of the character described,-com prising a receiver for unarranged drawing pins, a shaking trough, means for removing the pins from the container and conveying them to the trough, the said trough shaking the pins fed to it so as to place them on their heads with the pin portion pointing upwardly, yan outlet in the said trough for the pins, sorting means adjacent to the outlet to receive the pins coming on their backs out of the outlet and conveying them individually and equidistantly, conveyor means for the pins, a movable vdevice Aopposite the said conveyor means for orienting the pins on the said conveyor means, means for holding the pins in position while they are placed on said conveyor means, and means for bending down the fingers of the pins.

3. A machine according to claim 2, in which the means for removing the pins fromthe container and conveying them to the trough comprise a plunger adapted to be moved up and down 130 in the container and accommodating a plurality of pins at its top end, and a stripper moving transversely to and fr0 relative to the said plunger for stripping olf the pins from the top end of y ,the said plunger at the end of each upward stroke .mittently moved in longitudinal direction, the Youtlet being provided at .its lowermost corner and opening into the sorting means, and in which another outletis disposed in the lower cross wall lfor the pins'failing to pass outl throughthe first f4.5

outlet.

5. A vmachine according to claim 2L, in which the sorting means comprise an inclined plane, a

plurality of sorting wheels arranged one behind another on the said inclined plane and rotating at decreasing speeds in the same direction, a plurality of equidistant circumferential notches on the said wheels for the reception of the pins coming out of the shaking trough, and a guide rail embracing the lowest portion of each wheel for catching and conveying the pins.

. 6. A machine of the character described, comprising a receiver for unarranged drawing pins, a shaking trough, means for removing the pins from the container and `conveying them to the trough, the said trough shaking the pins fed to it so as to place them on their heads with the pointed member extending upwardly, an outlet in the trough for the pins, an inclined planev adjacent to the outlet, a plurality of sorting wheels arranged one behind the other on the said inclined plane and rotating at decreasing speeds in the same direction, a plurality of equally spaced circumferential notches on the said wheels for receiving the pins coming out of the shaking trough, a guide railv embracing the lowest portion of each wheel for catching and conveying the pins, a catch groove below the last sorting wheel, a rotary table passing the said groove at one end thereof on the same leveland moving stepwise with the last sorting wheel, a plurality of circular hollows in the rotary table for receiving pins, and a reciprocating slide in the said groove at the end thereof opposite the rotary table, the said slide being controlled relative to the last sorting wheel and the rotary table to supply at each motion in the direction of the table one hollow thereof with a pin.`v

7. A machine according to claim 6, in which a bolt capable of rotating always in the same direction about an axis parallel to that of the rotary table is vprovided above the table and at the edge thereof and adapted to be lowered over each hollow of the table and to make a complete revolution and in which the said bolt has a downwardly extendingeccentric tappet adapted Vto come into contact with the fingers of the pins and to turn the fingers into proper position for attaching the pull tapes.

8. A machine according to claim 6, in which radially movable slides corresponding in rnumber to that of the hollows are provided on the surface ofthe rotary table and, further, means for controlling the said slides adapted to cover partially the pins lying in the hollows and temporarily holding them in position.

9. A machine according to claim 6, in which a plunger adapted to move up and down is provided on the edge of the rotary table to depress the fingers of the pins.

10. A machine according to claimv 6, in which two-plungers adapted to be moved up and down are provided on the edge of the table, one of the said plungers acting on the ends of the fingers of the pins located at one point of the rotary table and the other plunger acting on the finger of the pin located at another point on said table.

1l. A machine according to claim 6, in which all parts are arranged on a common base plate.

FRIEDRICH KAISER. 

